The two stars first met when they shot on an OP ad campaign in early 2010, and given Agron's recent split with Sebastian Stan, the 33-year-old actor saw the NYLON dinner as his opportunity to make a move.

"Trevor spent the night flirting with Dianna, who really didn't seem interested," an onlooker tells Us Weekly. Despite sharing two Blue Moon beers by the bar, Agron steered clear of the six-foot-two actor once dinner was served.